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Open AccessArticle

Spontaneous Magnetization and Optical Activity in the Chiral Series {(L-proline)nV[Cr(CN)6]x} (0 < n < 3)

1
Institute of Chemical Research of Catalonia (ICIQ), the Barcelona Institute of Science and Technology (BIST). Av. Països Catalans 16, 43007 Tarragona, Spain
2
ICREA, Passeig Lluis Companys 23, 08010 Barcelona, Spain
*
Author to whom correspondence should be addressed.
Magnetochemistry 2020, 6(1), 12; https://doi.org/10.3390/magnetochemistry6010012
Received: 13 January 2020 / Revised: 26 February 2020 / Accepted: 28 February 2020 / Published: 3 March 2020
(This article belongs to the Special Issue Feature Papers in Magnetochemistry)
The incorporation of the natural amino acid L-proline in the synthesis to vanadium-chromium Prussian blue derivatives results in materials exhibiting magnetic ordering including chiral magnetic centers. Although the amorphous nature of these materials makes difficult to assess the structural features of these proline-containing compounds, magnetic and spectroscopic data confirms their multifunctionality. They exhibit high-temperature magnetic ordering (Tc < 255 K) and a circular dichroic signal, representing the molecule-based chiral magnets with the highest ordering temperatures reported to date. In addition, the presence of chiral L-proline (or D-proline) has additional benefits, including higher redox stability and the appearance of magnetic hysteresis. The latter was not observed in the parent compounds, the series of room temperature molecule-based magnets V[Cr(CN)6]x. View Full-Text
Keywords: molecule-based magnets; chirality; magnetic hysteresis; cyanide; vanadium; chromium; amino acid molecule-based magnets; chirality; magnetic hysteresis; cyanide; vanadium; chromium; amino acid
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Rodríguez-García, B.; Galan-Mascaros, J.R. Spontaneous Magnetization and Optical Activity in the Chiral Series {(L-proline)nV[Cr(CN)6]x} (0 < n < 3). Magnetochemistry 2020, 6, 12.

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